newcomb



(No Model.)

2 Sheets-Sheet 1.

H. A.'NEWCO1VIB.

MOLD.

Patented Apr. 21, 1885.

(No Model.) 2 Sheets-Sheet 2.

lH. A. NE'WGOMB.

MOLD.

No. 316,052. Patented Apr. 21V, 1885.`

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Unirse Smarts @maar trice..

HORATIO A. NEWCOMB, OF GREENFIELD, MASSACHUSETTS.

lVlOLD.

SPECIFICATION forming part of Letters Patent No. 316,052, dated April 21, 1885.

Application filed May 16,1884. (No model.)

To all whom it may concern:

Be it known that I, HoRA'rro A. NEwcoMB, of Greenfield, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Molds, of which the following is a specification.

My invention consists in a self-adjusting mold for use in casting holsters upon the handles of cutlery and for like purposes, as hereinafter fully explained.

In the annexed drawings, Figure 1 is a face View of the two sections or halves of the mold. Fig. 2 is aperspective View of asection showing its parts separated; Fig. 3, a cross-section on the linea: x of Fig. 1 Fig. 4, a similar cross-section on the line y y of said figure, Figs. 5 and 6, sections on the same lines through the complete mold, showing a knifehandle and blade in position therein 5 Fig. 7,. a perspective view of a knife as it comes from the improved mold; Fig. 8, a similar view of a knife from the old style of mold.

It has been the practice for a long time past to cast bolsters upon handles of the cheaper classes of knives and forks and likeimplements, and, in order to adapt the mold to receive handles varying in size as they come to it in the rough, the mold has been necessarily made large enough toreceive the largest-sized handles. size fail to fill the mold and the molten metal or composition flows out around the handle and necessitates a considerable amount of labor in subsequently removing it, as well as a loss or waste of metal, and in removing the surplus there is danger of loosing the remaining portion. l

The present invention is designed to obviate this difficulty, which end is attained by constructing the mold with self-adj ustin g walls supported by springs and pressed inward thereby,so as to reduce the internal space and cause the walls to press against the handle inserted in the mold, and to adapt themselves at once to whatever size may be brought to the mold. Obviously, this principle may be embodied in various forms; but the following described construction has been found to ansWer well for tab1ecutlery, reference being again made to the drawings as illustrating the same.

A indicates one side or section of a mold,

As a consequence,handles of smaller' i and B the outer half or section, one being a counterpart of the other but inverted. A description of one therefore applies to both. Each section consists of a metal block of suitable size having two raised portions, aand b, and three cavities or recesses,c, d, and e, which receive respective blocks C, D, and E, each adapted to move in its recess and pressed in a given direction by spring f. Blocks C and E have a movement facewise into and out of the section A or B, and block D merely slides in a plane parallel with the face of the section, each block being held in place by a screw, F, or by any equivalent fastening, the hole g, through which the screw of block D pass es,be ing elongated to permit the sliding movement of said block, as shown in Fig. 2. The raised portion a forms one-half of thel upper side of the mold, contains half the sprue-hole h, and forms the guidewall for the upper end of block E. Raised portion b forms a guide-wall for the lower end of block E,which is guided at the sides by the upright side walls of cavity or recess e, as plainly shown in Fig. 2. The face of block C forms the side of the mold and rests fiat against the side of the knife-handle G, as shown in Figs. 5 and 6. or side face of block D,like the lower edge of raised portion ,is curved or fashioned to conform to the edge or narrower face of the knifehandle, and block E is fashioned to form a mold for one side of the bolster to receive the blade or the tine portionH of a knife of fork, and has a semicircular recess, i, forming a continuation of the sprue-hole h. Two such sections being provided, the knife, fork, or other article in an unfinished state-that is to say, with the scales of the handles applied to the tang but not dressed to shape-is placed between them,and the two sections are pressed and clamped together, the blocks C, D, andE being forced back a great or less distance against the pressure of the spring f, which thus permits the blocks to adapt themselves produce a mold of the exact size required, the spring, of course, pressing the blocks into close contact with the handle and blade and pre venting the metal from flowing out around the handle. As is customary in this class or grade of cutlery the scales of the handle are grooved or recessed to permit the metal to flow into The upper edge accurately to the handle and blade, and to IOO the grooveand firmly attach the bolster to the cutlery-handles and for like work, having handle. yielding walls adapted to fit closely to thehan- Fig. 7 shows the appearance of a knife in dle, and to be pressed back by the scales and which the casting is done with a mold of my tang, substantially as described and shown.

5 improved construction; and Fig. 8 shows a 2. The herein-described mold,consisting of zo knife as it. comes from the old form of mold sections A B, provided with xed portions a when not exactly tting or filling the same. b, and yielding blocks G D E, springs f, and

A single yielding block in each section or screws F, all constructed, combined, and aryielding blocks in one section only will give ranged to operate substantially as described 1o better results than the common form of mold and shown.

and may be used; but I prefer the construc- T tion described and shown. v HORA'HO A BEWCOMB' Having thus described my invention,whatI Vitnesses: claim is- OsoAR G. STRATTON, 15 l. A mold for use in casting bolsters for l WILLIAM S. WILLIAMS. 

